I have a Denon x1000 AVR, i can browse into my madsonic server without problems but i cannot play any file. I tried with mp3 and flac, same problem.My denon just tell me "impossibile to play file".This is the error i get in madsonic logs :

[2014-09-27 15:25:41,887] ERROR FolderBasedContentDirectory - UPnP error: java.lang.IllegalArgumentException: fromIndex(2) > toIndex(1)java.lang.IllegalArgumentException: fromIndex(2) > toIndex(1) at java.util.ArrayList.subListRangeCheck(Unknown Source) at java.util.ArrayList.subList(Unknown Source) at org.madsonic.service.upnp.FolderBasedContentDirectory.subList(FolderBasedContentDirectory.java:197) at org.madsonic.service.upnp.FolderBasedContentDirectory.browseRoot(FolderBasedContentDirectory.java:166) at org.madsonic.service.upnp.FolderBasedContentDirectory.browse(FolderBasedContentDirectory.java:84) at org.fourthline.cling.support.contentdirectory.AbstractContentDirectoryService.browse(AbstractContentDirectoryService.java:200) at sun.reflect.GeneratedMethodAccessor105.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.seamless.util.Reflections.invoke(Reflections.java:41) at org.fourthline.cling.model.action.MethodActionExecutor.execute(MethodActionExecutor.java:90) at org.fourthline.cling.model.action.AbstractActionExecutor$1.execute(AbstractActionExecutor.java:73) at org.fourthline.cling.model.DefaultServiceManager.execute(DefaultServiceManager.java:128) at org.fourthline.cling.model.action.AbstractActionExecutor.execute(AbstractActionExecutor.java:71) at org.fourthline.cling.protocol.sync.ReceivingAction.executeSync(ReceivingAction.java:104) at org.fourthline.cling.protocol.ReceivingSync.execute(ReceivingSync.java:63) at org.fourthline.cling.protocol.ReceivingAsync.run(ReceivingAsync.java:71) at org.fourthline.cling.transport.spi.UpnpStream.process(UpnpStream.java:82) at org.fourthline.cling.transport.impl.apache.HttpServerConnectionUpnpStream$UpnpHttpService.doService(HttpServerConnectionUpnpStream.java:210) at org.apache.http.protocol.HttpService.handleRequest(HttpService.java:290) at org.fourthline.cling.transport.impl.apache.HttpServerConnectionUpnpStream.run(HttpServerConnectionUpnpStream.java:114) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source)